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THEORETICAL MODEL FOR THE INITIAL STIFFNESS OF BOLTED T -STUB CONNECTION
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摘要: 将T形件连接中的栓板单元简化为弹簧单元,考虑螺栓预拉力的影响,用带弹簧支座的连续梁模型模拟受拉T形件,推导出T形件连接的初始刚度计算表达式。通过与试验、有限元以及欧洲规范的对比,发现该表达式对无预拉T形件连接刚度的预测好于欧洲规范,对有预拉T形件连接也能得出较理想的初始刚度。Abstract: Bolted T -stub connection ismodeled by a continuous beam with spring supports that are simplified from preloadedbolt and the compacted plates, from which the formula calculating the initial stiffness of T -stub connection is drawn. Bycomparison with the results of tests, finite element analysis and European code, it. s found that the formula can give moreaccurate initial stiffness than European code for non -preloaded T -stub connection, and can give satisfactory result of initialstiffness for preloaded one.
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Key words:
- T-stub connection /
- initial stiffness /
- steel structure /
- end -plate connection /
- theoretical model
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.CEN. EN 1993-1-8, Eurocode 3: Design of Steel Structures -Part 1-8: Design of Joints. 2005 .Shi Y J, Chan S L, Wong Y L. Modeling for Momen-t RotationCharacteristics for End -Plate Connections. Journal of StructuralEngineering, 1996,122(11): 1 300-1 306 .王素芳, 陈以一, 陈友泉, 等. 端板连接高强度螺栓群中和轴位置研究. 建筑科学与工程学报, 2005, 22(3): 45-54 .郭 兵. 钢框架梁柱端板连接在循环荷载作用下的破坏机理及抗震设计对策: [ 博士学位论文]. 西安: 西安建筑科技大学, 2002 .李少甫. 钢结构的螺栓端板连接. 建筑结构, 1998, 28(8): 24-26 .陈绍蕃. 门式刚架端板螺栓连接的强度和刚度. 钢结构, 2000, 15(1): 6-11 .Ana M, Gir?o Coelho, Frans SK Bijlaard, et al. Experimental Assessmentof the Behavior of Bolted T-Stub Connections Made up of Welded Plates.Journal of Constructional Steel Research, 2004, 60:269-311 -
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